Short answer. The burden flips to you. If the other party is illiterate, or the contract is in a language they do not understand, and they later allege mistake or fraud, you, not them, must prove the terms were fully explained before signing. Simply having a signature on the document is not enough once that claim is raised.

What the law says

the person enforcing the contract must show that the terms thereof have been fully explained to the former

Civil Code, Article 1332 — Burden Where a Party Cannot Read. Read the full provision →

Why the burden shifts

Ordinarily, a person challenging a contract has to prove the defect that voided their consent. Article 1332 reverses that for a specific vulnerable class: someone unable to read, or facing a contract in a language they do not understand, who later claims mistake or fraud.

The law assumes the disadvantage was real once it is raised, and puts the work of disproving it on the party who wants the contract enforced, not on the signer.

What counts as proof of explanation

A bare signature or thumbmark is not enough on its own. What tends to satisfy the burden is evidence that someone read the terms aloud in a language the signer understood, that a translator or an independent witness was present, or that the signer had real time and opportunity to ask questions before agreeing.

A rushed signing with no witness and no translation leaves the enforcing party very little to point to.

Who this affects in practice

This provision comes up often with domestic workers, farm tenants, elderly signers, and anyone presented with a contract in English or a foreign language they do not speak well. A lender, employer, or buyer relying on such a contract should keep a record of how it was explained, not just proof that it was signed.

Businesses that regularly deal with such signers sometimes build the explanation step into their own process precisely because the law will later put the burden on them, not on the signer, if a dispute comes up.

What happens if the burden isn't met

If the enforcing party cannot show the terms were explained, the signer's claim of mistake or fraud stands a much better chance, and the contract can be annulled even though it looks complete and properly signed on its face.

A court is not looking for a perfect record, but it does expect something more concrete than an assumption that the signer understood, especially where the disparity in education or language is obvious from the circumstances.

Cases citing this provision

These Supreme Court decisions cite the provision above. We list them so you can read them yourself; the summaries of what each decided are not ours to give.

Related provisions

Note. Statute text quoted on this page is reproduced from the official enactment and is linked to the full provision. The explanation around it is general legal information from Vivas & Nobles Law Office, not legal advice. Whether it applies to your situation depends on facts only a lawyer reviewing them can assess.